1167644223 has 12 divisors (see below), whose sum is σ = 1699879168. Its totient is φ = 772299360.

The previous prime is 1167644173. The next prime is 1167644237. The reversal of 1167644223 is 3224467611.

1167644223 is a `hidden beast` number, since 1 + 1 + 6 + 7 + 644 + 2 + 2 + 3 = 666.

It is not a de Polignac number, because 1167644223 - 2¹³ = 1167636031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167644323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 509638 + ... + 511923.

Almost surely, 2^1167644223 is an apocalyptic number.

1167644223 is a deficient number, since it is larger than the sum of its proper divisors (532234945).

1167644223 is a wasteful number, since it uses less digits than its factorization.

1167644223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021694 (or 1021691 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 1167644223 is about 34170.8095163108. The cubic root of 1167644223 is about 1053.0205459691.

The spelling of 1167644223 in words is "one billion, one hundred sixty-seven million, six hundred forty-four thousand, two hundred twenty-three".